The answer is option C: Sierra club
Explanation:
-The Sierra Club Foundation owns and operates the historic Shasta Alpine Hut. The property is popularly known as "Horse Camp,"
-Horse Camp ensures a reliable supply of fresh water.
-There are plenty of cleared campsites after the snow melts out. A fire ring in front of the hut offers climbers and campers a place to socialize on summer evenings.
-The Phoenix solar-powered, composting toilet converts human waste into a non-toxic end product, making it easier to practice low impact camping.